I was looking in to getting a biasing meter or just a few probes that connect to a regular volt meter. Can you guys offer any advice ? The one i mainly looking at is going to run me $200. Its a Quad-tube meter by asharpfretworks. It would allow me to hook up 4 power tubes at one and be able to select any tube and view the current, and the plate voltage. I didnt know if this was overkill, or if something that would make things a little easier. Also, i could just pick up a couple bias probes that connect to the tube, and to a volt meter. Would be a lot cheaper but would only allow me to test one tube at a time. I have 2 amp heads that i would like to be able to take care of, as well as a few friends who i would be doing it for. Nothing professional, or Does anyone here have any set up to bias there own amps ?